import sqlite3 import click from flask import current_app, g from flask.cli import with_appcontext def get_db(): if 'db' not in g: g.db = sqlite3.connect( current_app.config['DATABASE'], detect_types=sqlite3.PARSE_DECLTYPES ) g.db.row_factory = sqlite3.Row return g.db def close_db(e=None): db = g.pop('db', None) if db is not None: db.close() def init_db(): db = get_db() with current_app.open_resource('schema.sql') as f: db.executescript(f.read().decode('utf8')) @click.command('init-db') @with_appcontext def init_db_command(): """Clear the existing data and create new tables.""" init_db() click.echo('Initialized the database.') def init_app(app): app.teardown_appcontext(close_db) app.cli.add_command(init_db_command)